Golgari Locket

The Locket cycle answers a recurring problem in two-color decks: a fixing piece for the early game that does not rot into a dead draw once your mana is sorted. The tap ability is plain ramp-and-fix, the kind of black-or-green rock that has anchored midrange shells since artifact mana first existed. The second ability is where the design earns its slot: late, when lands are flooding and the rock would otherwise sit idle, you sacrifice it to draw two. The hybrid activation cost is the clever part. Four black-or-green pips mean the draw fires off any mix of those two colors, so a deck tilted heavily toward one of its colors can still cash the Locket in without being stranded behind a color it cannot produce. That flexibility separates it from a rigid filter: the artifact never leaves its own payoff locked away. It is a deliberately humble piece of smoothing, converting surplus mana into cards without asking you to build around it, and the kind of unflashy engine that quietly raises the floor of a slow deck.